Cortland County, New York ZIP codes
12 ZIP codes are in Cortland County, plus 7 that cross in from neighboring counties. It's part of the Cortland, NY micro area.
- ZIP codes
- 12
- Population in these ZIPs
- 46,761
- Avg. median income
- $70,100population-weighted
- Cities & towns
- 12
Click anywhere on the map to see which ZIP code it's in.
ZIP codes in Cortland County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 13040 | Cincinnatus | 2,595 | $70,167 | $180,400 |
| 13045 | Cortland | 28,361 | $69,961 | $210,300 |
| 13056 PO Box | East Homer | — | — | — |
| 13077 | Homer | 6,405 | $72,266 | $233,600 |
| 13087 | Little York | 116 | $97,125 | $205,800 |
| 13101 | Mc Graw | 2,358 | $63,587 | $181,100 |
| 13141 | Preble | 652 | $80,208 | $224,100 |
| 13158 | Truxton | 1,217 | $85,208 | $198,100 |
| 13738 | Blodgett Mills | 20 | — | — |
| 13784 | Harford | 382 | $76,446 | $177,900 |
| 13803 | Marathon | 4,273 | $63,713 | $206,800 |
| 13863 | Willet | 382 | $73,333 | $155,700 |
ZIP codes partly in Cortland County
These ZIP codes are mostly in a neighboring county but cover part of Cortland County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 13052 | De Ruyter | Madison County | 1,759 | $76,750 | $257,400 |
| 13053 | Dryden | Tompkins County | 4,794 | $83,021 | $296,500 |
| 13136 | Pitcher | Chenango County | 406 | $51,667 | $120,200 |
| 13159 | Tully | Onondaga County | 5,204 | $101,250 | $318,900 |
| 13835 | Richford | Tioga County | 1,184 | $66,620 | $195,100 |
| 13841 | Smithville Flats | Chenango County | 385 | $58,229 | $151,200 |
| 13862 | Whitney Point | Broome County | 3,440 | $63,487 | $203,100 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities and towns in Cortland County
Nearby counties
Frequently asked questions
How many ZIP codes are in Cortland County, New York?
12 ZIP codes are mainly in Cortland County, and 7 more ZIP codes from neighboring areas reach partly into it.
What cities are in Cortland County?
ZIP codes in Cortland County use the city names Blodgett Mills, Cincinnatus, Cortland, East Homer, Harford, Homer, Little York, Marathon, Mc Graw, Preble, Truxton and Willet.
What metro area is Cortland County in?
Cortland County is part of the Cortland, NY micropolitan statistical area.